Im about to cosplay Thor,from the Avengers (2012), but I have no idea how to make his beard (more beard/stubble). I have crossedplayed guys before, but none with more then a litle stubble, So I want help how to do it in a nice way that looks as real as posible. Any suggestion are welcome<3

I recently cosplayed someone with a goatee and what I did was I chopped up a bunch of black wig fibres into the length of stubble. Then I used some spirit gum and applied it to the area I needed to cover and pressed the wig fibres into the spirit gum. It looked A LOT better than what I could have done with eye liner or whatever.

i did luxord at nakakon last year. i used a light brown eyebrow pencil to color on the goatee, then used a bit of my own hair finely chopped up and spirit gummed it on over the pencil. other than being extremely light blonde, it looked realistic enough that my friends didn't recognize me in the hallway and everyone who sees the photos thinks i'm a guy it's itchy and a pain to get the spirit gum off (make sure you have remover) but i think it's worth the discomfort

Try using some grease based makeup and some stipple sponges. Take a brown color, stipple it on your face (not too much, as this will be a contrast color), set it with setting powder, when it wont smudge repeat the process with a blond color and be a bit more heavy handed. Set that and you should be good to go.
Do this AFTER all your other makeup is put on, as you wont be able to do any contorting/shadow/whatever after you put the stubble on.

At least, that is what I believe the method my friends used is. I was only told it once, but it's something that's super easy to try out.
It was used to achieve the stubble for this Thor cosplay. http://ellensama.tumblr.com/image/26962622116

This method is nice for anyone who might be allergic or sensitive to spirit gum related adhesive and what not.